\chapter{因式分解}

\input{units/czds2-ch7-subsec1}
\input{units/czds2-ch7-subsec2}
\input{units/czds2-ch7-xiti6}

\input{units/czds2-ch7-subsec3}
\input{units/czds2-ch7-xiti7}

\input{units/czds2-ch7-subsec4}
\input{units/czds2-ch7-subsec5}
\input{units/czds2-ch7-subsec6}
\input{units/czds2-ch7-xiti8}

\input{units/czds2-ch7-xiaojie}
\input{units/czds2-ch7-fuxi}

